Wrench



STATES wnnivoii. Y j' 1 p seams of ters ,B s l -i seaweedrams 10, 1921.Serial No. 443,9si

To all whom it may concern .1

Be it known that we,RIoHArn H. DIMOCK, JOSEPH SHEAVER, and GEORGEVVYsKooIn, citizens of the United States, residing at Cedar Rapids, inthe county of Linn and State of Iowa, have invented certain new anduseful Improvements in Wrenches; and we do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to wrenches of the adjustable, angle-jaw type,and the object of the invention is to produce a wrench of this type inwhich the adjustment of the jaws for difierent sized nuts is effected ina simple manner, and by the turning of the wrench handle.

The invention is fully set forth and claimed in the description andclaims following, reference being had to the accompanying drawing, inwhich a Figure 1 is a side view of the wrench, the fixed jaw being shownin section. Fig. 2 is a fragmentary elevation of the wrench as seen fromthe left of Fig. 1. Fig. 3 is a plan view of the movable'jaw, as seenfrom the wrench-handle 'grees degrees,

under (handle) side. Fig. 4 is a plan view of the conical scroll whichengages the movable jaw. Fig. '5 shows a central section of the same,and a fragmentary section of the fixed jaw transverse thereto.

' In the drawing, the numeral 5 denotes the jaw which may be designatedas the fixed jaw. This is mortised at 6 to receive the shank? of themovable jaw 8. This shank is here shown as formed with lateral, parallelribs 9 which fit slidably in corresponding grooves 10 of the mortise,and serve to guide the movable jaw and hold it in true working position.The depending portion of the shank, 11, is formed as a rack, havingteeth 12, preferably somewhat crescent-shaped, as shown in Fig. 3 tomesh with a spiral scroll 13 attached to the 1 1. As the handle standsat an. angle to the rack of less than 90 deas shown), the scroll isformed as the frustum of a cone, and but one side of its spiral thread13 engages the rack. The scroll is held in such engagement by shoulders15 of a hole 16 in the fixed jaw. At right-angles to these shoulders isa hole 17, preferably tapered, to give added gives a vise-like grip onthe nut.

strength to the handle, to receive the tapered shank 18 of the handle.In practice the scroll is screwed on the threaded end 19 of the handle,and secured against unscrewing by a pin 20. The scroll is shown toproject a little beyond the faces of the fixed jaw, as it may do withoutinterfering with the action of the wrench in close places,

PATENT OFFICE. Brennan I a. aosnrier iiivn enonGE: wxskoorn, or QlElDAR.RA-rins,

.Qrate ntea luggie, 'ieziiand the periph- I cry of the scroll beingmilled, the handle may be turned thereby, by the use of a thumb orfinger.

The advantages of an angle-j aw wrench, in I turning nuts in a limitedspace for the movement ofthe handle, are well-known and universallyrecognized. This wrench has the further advantage of enabling theoperator to draw the jaws up tightly on the nut by turning the handle,the action of which This is especially convenient and desirable in therestricted spaces of automobiles and other machinery, where the operatormust work practically at arms length in some cases, and with only agrasp of the wrench near the handle end. o

Having thus described our invention, we

claim 1. In an angle-wrench, a fixed jaw mortised to receive therack-toothed shank of a movable jaw, a movable jaw having a shank atright angles-to its working face, and fitting said mortise, a handleinclined at less than ninety degrees to said shank, and provided with aconical, spiral scroll engaging said shank.

2. In an angle-wrench, a tised at right angles to its working face, amovable jaw with a rack-toothed shank shdable in said mortise, a handlerevolubly mounted in the fixed jaw at less than a right. angle. to saidshank, and a conical spiral scroll attached to said handle, andengagingat one side the rack-teeth'of said shank.

8. An angle-j aw Wrench, comprising a fixed jaw mortised to receive theshank of'a parallel-faced movable jaw, and havingan adjacent hole toreceive a scroll, with retaining shoulders therefor, and a communicatinghole for the shank of a handle, a'movable jaw having a right-angledrack-toothed shank slidable in the mortise, a handle revoluble in thefixed jaw, and a conical scroll attached thereto, and engaging the shankof the movable jaw. V

.4. In an angle-jaw wrench having ,a fixed jaw, a movable jaw slidabletransversely In testimony whereof we alfix our signa- 10 thereof, andrack-toothed for engagement tures in presence of two witnesses.

with a scroll, a handle mounted revolubly in 7 w the fixed jaw andinclined to its nut-engaging 5 face, and a eonicalseroll screwed on theend of GEORGE WYSKOGI'L the handle, and engaging the rack-teeth at oneside, the fixed jaw having a hole to receive Witnesses: the scroll, andshouldered to hold it'in en- J M. ST. JOHN, gagement With the rack. V O.A. KEARNEY.

